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External clamp-type ultrasonic flowmeters are highly praised in the market for their accuracy, stability, and ease of operation. It is commonly used for measuring flow rates in large pipelines. It is easy to use – simply clamp the sensor onto the pipeline in the specified manner to carry out measurements, without the need to damage the pipeline, and it offers relatively high measurement accuracy. Sensors with IP68 protection have a longer service life; they can operate stably without replacement for 5-6 years. External clamp-type ultrasonic flowmeters require high skill from the installers; the level of installation has a direct impact on measurement accuracy. They also demand frequent maintenance over time, as the coupling agent loses its effectiveness or the position of the sensors changes, which can affect the measurements, necessitating regular maintenance. I. Before installing an ultrasonic flow meter, it is necessary to understand the conditions at the installation site, including: 1. What is the distance between the sensor location and the main unit? ； 2. Pipe material, wall thickness, and diameter ； 3. Pipeline age ； 4. Fluid type, presence of impurities and bubbles, and whether the pipe is full ； 5. Fluid temperature ； (Insertion-type sensor pipeline pressure) 6. Are there any sources of interference at the installation site (such as variable-frequency drives, high-voltage cable installations, etc.)? ； 7. Temperature in the location where the ultrasonic flowmeter unit is installed throughout the four seasons ； 8. Is the power supply voltage stable? ； 9. Is a remote transmission signal required and what type? ； Based on the site conditions provided above, the manufacturer can make configurations tailored to those conditions, and custom models can also be developed if necessary. II. Selection of installation location The choice of the pipe section for installation has a significant impact on the accuracy of testing. The selected pipe section should be free from interference and eddies, which can greatly affect measurement accuracy. Generally, the chosen pipe section should meet the following conditions: 1. It should not be installed in areas with pumps, high-power radios, or frequency converters, that is, in places with strong magnetic fields and vibration interference ； 2. The pipe material selected should be uniform and dense, to facilitate the transmission of ultrasonic waves by the ultrasonic flow meter ； 3. There must be a sufficiently long straight pipe section; the straight pipe section upstream of the installation point should be greater than 10D (note: D = diameter), and that downstream should be greater than 5D ； 4. There should be a distance of 30D between the installation point and the water pump upstream ； 5. The pipeline should be filled with fluid ； 6. There should be sufficient space around the pipes to facilitate operations by on-site personnel. For more information, please visit the company’s official website at http://www.yb1518.com/. Please keep this link when reproducing the content! http://www.yb1518.com/UploadFiles/201511391839385.jpg